1 files changed, 3 insertions, 1 deletions
diff --git a/src/gui/kernel/qpointingdevice_p.h b/src/gui/kernel/qpointingdevice_p.h
index 3638dbc39a..b2f0574e9b 100644
--- a/src/gui/kernel/qpointingdevice_p.h
+++ b/src/gui/kernel/qpointingdevice_p.h
@@ -20,6 +20,8 @@
 #include <QtGui/qpointingdevice.h>
 #include <QtGui/private/qtguiglobal_p.h>
 #include <QtGui/private/qinputdevice_p.h>
+
+#include <QtCore/qpointer.h>
 #include <QtCore/private/qflatmap_p.h>
 
 QT_BEGIN_NAMESPACE
@@ -72,7 +74,7 @@ public:
     void clearPassiveGrabbers(const QPointerEvent *event, const QEventPoint &point);
     void removeGrabber(QObject *grabber, bool cancel = false);
 
-    using EventPointMap = QFlatMap<int, EventPointData>;
+    using EventPointMap = QVarLengthFlatMap<int, EventPointData, 20>;
     mutable EventPointMap activePoints;
 
     QPointingDeviceUniqueId uniqueId;